Distributions of clay minerals in surface sediments of the middle Bay of Bengal: Source and transport pattern

Li, Jingrui; Liu, Shengfa; Shi, Xuefa; Feng, Xiuli; Fang, Xisheng; Cao, Peng; XingQuan, Sun; Ye, Wenxing; Khokiattiwong, Somkiat; Kornkanitnan, Narumol

doi:10.1016/j.csr.2017.06.017

Cited by 35 publications

(26 citation statements)

References 33 publications

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“…Unoriented gravity cores (see Li et al, 2017 for sampling sites) were collected during China-Thailand joint scientific cruises from March to May in 2014. The cores, ranging from 0.5 to 4.3 m in length, were cut into sections of similar length and were stored in China Ocean Sample Repository after the cruise.…”

Section: Core Materialsmentioning

confidence: 99%

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Paleomagnetic Secular Variations During the Past 40,000 Years From the Bay of Bengal

Wang

Chang

Xue

et al. 2019

Geochem Geophys Geosyst

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Paleomagnetic secular variations in South Asia are not well understood due to insufficient records. In this study, we produce a new paleomagnetic secular variation curve covering the past 40,000 years by stacking four marine sediment records from the middle portion of Bay of Bengal. Age models are based on radiocarbon dating and core correlation. Stepwise alternating field demagnetization was used to isolate the primary remanent component. Rock magnetic measurements indicate that the primary magnetic remanence carriers are single domain and pseudo‐single domain magnetites with no sign of diagenetic alteration. Our Bengal relative paleointensity stack is broadly consistent with local records and the PISO‐1500 relative paleointensity stack (Channell et al., 2009; https://doi.org/10.1016/j.epsl.2009.03.012). Two geomagnetic excursions presented by paleointensity minima are recognized, which correlate to the Mono Lake (29–32 ka) and Laschamp excursion (38–40 ka), respectively. We conclude that the Mono Lake and Laschamp excursion are two separate events.

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Section: Core Materialsmentioning

confidence: 99%

“…The Bengal Fan is the largest submarine fan in the world with sediments mainly derived from Himalaya and India (Li et al, 2017). The surface depositional environment and underwater channels define the Bengal depositional system, whose development is shaped by the India-Eurasia collision (Curray, 2014).…”

Section: Introductionmentioning

confidence: 99%

Paleomagnetic Secular Variations During the Past 40,000 Years From the Bay of Bengal

Wang

Chang

Xue

et al. 2019

Geochem Geophys Geosyst

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“…The seabed sediment contains abundant information on the sediment sources, which makes the BoB an ideal area for studying the “source‐sink processes” at different time scales. Researchers agree that terrigenous debris is the main type of sediment (Curray, ; Li, Liu, Feng, Sun, & Shi, ; Venkatarathnam & Biscaye, ; Weber et al, ; Weber, Wiedicke‐Hombach, Kudrass, & Erlenkeuser, ) and that most of the sediment is the material eroded from the Himalayan mountains and transported by the Ganges–Brahmaputra, with a small portion from the Indian Peninsula and Southeast Asia (Joussain et al, ; Li, Liu, Feng, et al, ; Li, Liu, Shi, et al, ; Liu, He, et al, ; Liu, Zhu, et al, ; Tripathy, Singh, & Ramaswamy, ; Venkatarathnam & Biscaye, ).…”

Section: Introductionmentioning

confidence: 99%

“…The Active Valley channel (Figure ) is currently considered to be the only active sediment channel (Curray et al, ; Emmel & Curray, ). Controlled by turbidity currents, sediments in the central part of the BoB, especially near the Active Valley channel, are thought to be mainly sourced solely from the Himalayan mountains (Galy et al, ; Li, Liu, Feng, et al, ; Li, Liu, Shi, et al, ), while in the western and eastern portions of the bay, the sediments have also originated from other minor sources, such as the Indian Peninsula and Myanmar (Babu et al, ; Joussain et al, ; Kessarkar et al, ; Tripathy, Singh, Bhushan, & Ramaswamy, ; Tripathy et al, ). The sedimentary model of the BoB is controlled by sea level.…”

Section: Introductionmentioning

confidence: 99%

“…Clay minerals tend to be enriched in fine particles and can be used as effective indicators of sediment provenance and ocean circulation (Biscaye, ; Chamley, ; Li, Liu, Shi, et al, ; Pandarinath, ). In this article, using the clay mineral data of 98 surface sediments from the lower Bengal Fan, we identified the provenances of the sediments, calculated the relative contributions of each provenance, and further assessed the sediment transport of the study area.…”

Section: Introductionmentioning

confidence: 99%

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Clay minerals of surface sediments from the lower Bengal Fan: Implications for provenance identification and transport processes

et al. 2020

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Based on the clay mineral assemblages of 98 surface sediments from the lower Bengal Fan, we carried out a quantitative provenance identification and discussed the potential transport processes of fine fractions with the support of the hydrodynamic environment. Illite is the dominant clay mineral in the study area, with an average of 51%, followed by kaolinite, with an average of 20%, while chlorite and smectite account for averages of 17 and 11%, respectively. The study area can be divided into two provinces based on the clay mineral assemblages: Province I, located in the western part of the study area, has relatively higher smectite content, while province II, located in the eastern part, shows higher illite content. The Ganges–Brahmaputra (Himalayan) and the Godavari–Krishna (Indian Peninsula) are suggested to be the major provenances, and the average relative contributions of the Himalayan source and the Indian source are 76 and 24%, respectively. Sediments in province II receive more sediment from the Himalayan source, with an average contribution of 84%, while the Indian source mainly contributed to province I, with an average contribution rate of 32%. The Indian Peninsula materials are predominantly conveyed to the study area by the northeast monsoon circulation, and the relative contribution gradually decreases from northwest to southeast in the lower Bengal Fan. However, most of the Himalayan material is transported to the study area by the southwest monsoon. Our research indicates that the seasonal hydrodynamic pattern of the Northeast Indian Ocean plays an important role in controlling modern sediment transport in the Bay of Bengal, causing terrestrial materials from different sources to show significantly different spatial distribution characteristics.

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Quantifying clay mineral sources in marine sediments by using end-member mixing analysis

Cai

Wang

et al. 2021

Geo-Mar Lett

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Distributions of clay minerals in surface sediments of the middle Bay of Bengal: Source and transport pattern

Cited by 35 publications

References 33 publications

Paleomagnetic Secular Variations During the Past 40,000 Years From the Bay of Bengal

Paleomagnetic Secular Variations During the Past 40,000 Years From the Bay of Bengal

Clay minerals of surface sediments from the lower Bengal Fan: Implications for provenance identification and transport processes

Quantifying clay mineral sources in marine sediments by using end-member mixing analysis

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